This is a set of cards to help improve your understanding of the parts of the brain and their relationships. The basic goal here is to separate the terms used for the names of brain structures into 4 major sets: 1) levels of the neuraxis; 2) regions (within those levels) 3) groups of places (within regions) ; and finally, 4) specific brain places (such as a particular nucleus or a layer within a layered structure) where clusters of neurons are located . Some of the buttons on this card are new but like all other parts of this Browser Tour it should not be difficult to predict what will happen when you click on a button. Try just going on (clue :right arrow). Remember to use the Brain Browser Dictionary, Learner and Dictionary are closely coupled!